Notable changes

Added

• New subscription validation functions for Apple and Google in the runtimes.
• Add "NotificationsDelete" function to the runtimes.
• Add const field for easier access to system user ID in TypeScript definition.

Changed

• Return a cursor with "leaderboardRecordsHaystack" function.
• Use ArrayBuffer type instead of Uint8Array in JavaScript runtime. Thanks @formatCvt.
• Expose optional "recorded" param to "accountDeleteId" in TypeScript definition.

Fixed

• Fix function signature of "leaderboardRecordsHaystack" in TypeScript definition.
• Fix signature of "authenticateGameCenter" in TypeScript definition.
• Update field name used in Friend type in TypeScript definition.